Retry added

Telegram.class.php

@@ -1,16 +1,29 @@
 <?php
-class TelegramBot {
+/*
+ * PHP Telegram API implementation
+ * Daniele Callari
+ * Daxtech.net
+ *
+*/
+class TelegramBot 
+{
 	#
 	# version
 	#
-	const Version = '1.1';
+	const Version = '1.2';
+  
+  	#
+  	# limit of http retry
+  	#
+  	const RetryMax = 5;
+      
 	#
 	# Bot token
 	#
 	private $Token = null;
 	
 	#
-	# bool param
+	# bool param - TODO
 	#
 	private $Async = false;
 	
@@ -32,11 +45,21 @@ class TelegramBot {
 	#
 	# init class
 	#
-	function __construct($token){
+	function __construct($token)
+    {
       	#
 		# set token as private
 		#
 		$this->Token = $token;
+      
+      	#
+		# check curl module
+		#
+		if( !function_exists ('curl_init') )
+		{
+			header("Content-type:application/json");
+			die(json_encode(array('error' => true, 'message' => 'php-curl module not installed/enabled')));
+		}
 	}
 	
 	#
@@ -74,18 +97,29 @@ class TelegramBot {
 		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 
 		#
-		# TODO - manage timeout and retry
+		# do http call with retry
 		#
+		$TryCounter = 0;
+		$Result = false;
 		
+		while( $TryCounter < self::RetryMax )
+		{
 			#
 			# do call
 			#
-		$result = curl_exec($ch);
+			$Result = curl_exec($ch);
+
+			#
+			# manage retry
+			#
+			if($Result === false) $TryCounter++;
+			else $TryCounter = self::RetryMax;
+		}
 
 		#
 		# parse response
 		#
-		$j = json_decode($result, true);
+		$j = @json_decode($Result, true);
 
 		#
 		# output if debug
@@ -95,7 +129,7 @@ class TelegramBot {
 		#
 		# return response from api.telegram
 		#
-		return $j;
+		return ($Result)?$j:json_encode([]);
 	}
 	
 	#